CCTV (Closed-Circuit Television) cameras are surveillance devices used to monitor and record activities in various settings, such as homes, businesses, and public areas. These cameras transmit video signals to a specific set of monitors, providing real-time observation and recording for security purposes. Installation involves positioning cameras strategically to cover desired areas, connecting them to a central recording system, and ensuring proper power supply and network connectivity. Professional installation may include configuring remote access, motion detection, and integrating with other security systems. Proper installation and maintenance are crucial for optimal performance, ensuring reliable surveillance and enhancing safety and security.